Brush



June 21, 1938. C. NEUFELD 2,121,161

BRUSH Filed July 9, 1935 TELL. T- EE *I* TEE.

g n INVENTOR. Neufeld Patented June-2l, 1938 UNITEo STATES APliTEN-'r 4orrlcls This invention relates to brushes, and more particularly to brushes for use as gun swabs.

The objects of the invention are-to provide an improved brush as characterized; to provide a brush which will clean the bore lrifiing; to provide' a brush which Awill not bind when reversing `its `direction of cleaning motion; to provide a metal body for the brush; .to enable the'bristles to be replaced when worn; tov provide for adequate gripping area on thehandle; to provide alight but sturdy structure; to securesimplicity of construction and perfection in operation; and to obtain other advantages and results as may be `brought out inthe following description.

`Referring to the accompanying drawing in which ylike numerals of reference indicate similar parts throughout the several views;`

Figure 1 is an elevation of a brush for use as a gun swab constructed in accordance with the present invention; l y p Figure 2 is asimilar elevation o1' thebrush revolved ninety degrees from; the position shown in Fig. 1; v,

`Figure 3 is a centrallongitudinal section of the brush, as 'upon line 3-3 of Fig. 2; I

Figure v4 is an elevation of the body portion of 4the brush with the removable section thereof f taken oiiv; and

Figure 5 is an end view of the portion of the brush'shown inFig. 4.

4In the Ispeciiic embodiment of the invention illustrated in said drawing, the reference numeral I indicates the body 'portion of the brush, which is shown as having a main body section 2 and a removable complementary section 3 which together forms a complete cylindrical shape at the exteriorwith the outer'end semi-spherical. The brush body provides clumps of bristles 4 .entirely around the body portion and for a length of said body portion next the semispherical portion to the inner end of the complementary section.'4 At Vthe lend of thecomplementary section last mentioned, the main section has acompletely cylin drical -shape'thus providing a shoulder 5 against which rthe end'of the complementary section will abut. vBelow the shoulder 5,"said main section 2` provides a reduced cylindrical neck. vThe lower end of this neck is `formed with an end cavity 6 lsymmetrical to the axis of the body andprovid- :ing therein a seat I'ior a suitablefball-race or other' anti-friction bearing 8. Said Ibearing is held in plac'e by a' collar 9 threaded into the lower :end ofthe cavity.' Aj stud I0 ls mounted rotatably inthe race t'o'have both 4anti-friction rotate able 'motion' and anti-friction thrust-support,

The endof the-stud projects from the lower end of the cavity, and is screw threaded to be appli- The handle is end next the brush body portion so as to receive said stud in a suitably provided threaded hole axially disposed in the plug.v Some such means as a lateral pin I3 may be employed to hold the l0 plug fast in the handle tubing.

AIt will be notedin the construction of the brush body portion, that the same is preferably hollow and of metal, aluminum or an aluminum alloy also being used by preference in order that the l5 body portion may be both light and strong. An aligning lpin or the like I4 maybe provided adjacentthe outer end of one of the sections to fit within a female part, such as the 'hole I5 shown in the other section. The' .two sections are se- 20 cured together by suitable means, such as the pair of diametrically disposed screw-bolts I6, I6, the heads of which are preferably countersunk.

The' outerjend of the body portion is semi-spherical or dome-shaped by preference so that no dam- 25 agecan be done'by it if engaged against the gun bore in use, and further to aid in the introduction of the brush into a gun bore.4

A particular featureof the present invention resides in the structurepertaining to the bristles. 3o

It is to be observed first that the same are relatively short with respect to the diameter of the body POrtion of the brush. This enables me to vuse hair bristles and maintain adequate rigidity or stiiiness to be effective upon the carbon o r 35 other depositv in a gun bore. In thesecond place,

4the least possible interference with this action 45 of the brush following the ,twist of thev riing.

`The twist of the brush willreverse whendwith- Y drawing the brush, andjthis possiblev twisting Aas well as the fiexibilityof the bristles, lends itself to proper operation of the brush and avoids the 5o usual tendency injgu'n swabs 'to -wedge in the bore when the direction of movementofy the swab is reversed. This is of great 'importance in the art, and one-of the most serious dimculties encountered in cleaning guns. 'v'lhe invention apv55 plies very particularly to guns of cannon caliber, that is, three to sixteen inches and even more in bore diameter, but is not limited thereto, as it may also be made and used for smaller sizes of I wish to also emphasise the fact that the brush body is of metal. this fact avoiding the deleterious eil'ects ot .oil and other matter encountered in cleaning guns, and enabling the brush to be jury. The hollow construction also makes it economically practical to replace the bristles with in service for an indefinite length of time.

Having thus described the invention, I claim:

l. A brush as characterized, comprising a substantially cylindrical head, clusters of bristles projecting from the cylindrical surface of said head, said clusters'of bristles being arranged to project in longitudinal series the end clusters oi' each series toward one end of the head being substantially equally spaced around the head and constituting points through which pass theoretic parallels to the axis of the head on the cylindrical surface of said head, said series being angular with respect to said parallels with the clusters having substantially equal spacing from each other within a series as the spacing between the clusters/of one series and the next, and each series starting upon one of said parallels which crosses a next adjacent series substantially midway of the length of said adjacent series.

2. A brush as characterized, comprising a substantially cylindrical head, clusters of bristles projecting from the cylinder in longitudinal series, the end clusters of each series toward one end of the head constituting points through which pass theoretic parallels to the axis of the head on the cylindrical surface of said head, said series having angular relationship to said paralwashed with gasolene or other fluids without in-V new ones when required, thus keeping the brush lektotheaxisoftheheadlessthanloand seat therein, a bearing Aon said seat. bristles in.

said sections, and means for securing said sections separably together wherebythe bristles may be renewed as required. A

4. A gun swab comprising a brush body portion, a handle attached to said brush body portion for manipulating the same, an anti-friction connection between said brush body and handle, and clusters of bristles arranged in series the end clusters of each of which series toward one end of the head constitute points through which pass theoretic parallels to the axis ot' the head on the cylindrical surface of said head, said series all sloping with respect to said parallels and each series crossing a next adjacent parallel at a greater distance longitudinal o! the parallel 'than the distance separating two alternate parallels for rotating the brush body in use to iollow the riiling of the bore of a gun being cleaned.

5. A brush comprising a substantially cylindrical head, clusters of bristles projecting fromthe -cylindrical surfaceot said head in longitudinal series, the end clusters o! each of which series toward one end of the head constitute points through which pass theoretic parallels to the axis oi' the head on the .zylindrical surface of said head, said series all sloping with respect to said parallels and each series crossing a next adjacent parallel at a greater distance longitudinal ofthe parallelthan the distance separating two alternate parallels.

CURT NEUFEID. 

